HARD
8th CBSE
IMPORTANT
Earn 100

How many litres of water will flow in 7 minutes from a cylindrical pipe 1 cm in diameter, if water flows at a speed of 30 km per hour?

Important Questions on Mensuration-II (Solid Figures)

HARD
8th CBSE
IMPORTANT
START UP MATHEMATICS>Chapter 18 - Mensuration-II (Solid Figures)>EXERCISE 18.4>Q 3
The curved surface area of a cylinder is 1320 cm2 and its volume is 2640 cm3, find its height.
MEDIUM
8th CBSE
IMPORTANT
START UP MATHEMATICS>Chapter 18 - Mensuration-II (Solid Figures)>EXERCISE 18.4>Q 4
Find the cost of digging a well 2 m in radius and 14 m deep at the rate of ₹4.80 per m3.
HARD
8th CBSE
IMPORTANT
START UP MATHEMATICS>Chapter 18 - Mensuration-II (Solid Figures)>EXERCISE 18.4>Q 5
The volume of one iron rod is 1386 cm3. Find its diameter.
MEDIUM
8th CBSE
IMPORTANT
START UP MATHEMATICS>Chapter 18 - Mensuration-II (Solid Figures)>EXERCISE 18.4>Q 6
A rectangular sheet of paper, 44 cm long and 16 cm broad, is rolled along its length to form a cylinder. What is the radius of the cylinder? What is its volume?
MEDIUM
8th CBSE
IMPORTANT
START UP MATHEMATICS>Chapter 18 - Mensuration-II (Solid Figures)>EXERCISE 18.4>Q 7
The thickness of a metal pipe is 1 cm. Its inner diameter is 14 cm. What is the volume of metal needed for a pipe of length 1 m? (Use π= 3.14)
MEDIUM
8th CBSE
IMPORTANT
START UP MATHEMATICS>Chapter 18 - Mensuration-II (Solid Figures)>EXERCISE 18.4>Q 8
How many cubic metre of soil must be dug out to sink a well which is 21 m deep and has a diameter of 8 m? If the soil so dug out is spread over a rectangular plot 24 m×11 m, what is the height of the platform formed?
MEDIUM
8th CBSE
IMPORTANT
START UP MATHEMATICS>Chapter 18 - Mensuration-II (Solid Figures)>EXERCISE 18.4>Q 9
A particular brand of milk powder is available in two packs—a tin pack with a square base of each side 6 cm and height 14 cm or one with a circular base of radius 3.5 cm and height 12 cm. Which tin has a greater capacity and by how much?
MEDIUM
8th CBSE
IMPORTANT
START UP MATHEMATICS>Chapter 18 - Mensuration-II (Solid Figures)>EXERCISE 18.4>Q 10
Into a circular drum ot radius 4.9 m and height 3.6 m, how many full bags of grain can be emptied if the space required for each given bag is 1.8 m3? (Take π=3.14)